For many years researchers have investigated the effects of climate change on the future of plant biodiversity and predicting its response to environmental impact has become an extremely active field of research. Although there is relatively limited evidence of current extinctions caused by environmental impact due to climate change, studies suggest that it could surpass habitat destruction as the greatest global threat to biodiversity over the next few decades. However, the multiplicity of approaches and the resulting variability in projections make it difficult to get a clear picture of the future of biodiversity under different scenarios of global environmental impact. Hence, there is an urgent need to review our current understanding of the effects of climate change on biodiversity and our capacity to project future impacts using models. To this end, this review presents both the possible impacts of climate change and the different responses for change in biodiversity.